With the curtains set to fall on the International Maritime Organisation's climate summit on Friday, UK time, it's unknown whether the talks will deliver an ambitious climate outcome.
Whatever the conclusion, however, Pacific nations have made their presence felt.
They've been motivated, and pushed for global shipping to become fossil-fuel free.
But the negotiations have also, inadvertently, put a spotlight on those Pacific islands pushing for full decarbonisation of shipping and the introduction of a carbon tax; and the position of the Pacific Islands Forum at the IMO.
RNZ Pacific's Kelvin Anthony reports from London.